Monday evening, Apple released the first beta ofiOS 11 (read: Download and install iOS 11 beta without developer account). In the process, the apple brand has made available to developers beta 1 of the three other future major versions of its operating systems: macOS High Sierra, watchOS 4 and tvOS 11.
MacOS High Sierra arrives with multiple improvements and additional features compared to macOS Sierra (read: Keynote WWDC 2017: macOS High Sierra for Mac, what’s new?), Just like watchOS 4 compared to version 3 (read: Keynote WWDC 2017: watchOS 4 on Apple Watch, what’s new?). If you haven’t discovered them yet, go to our dedicated articles.
For information, the Mac compatible with macOS High Sierra are: MacBook Air (models from 2010), MacBook Pro (models from 2010), Mac mini (models from 2010), Mac Pro ( 2013 model), MacBook (models from late 2009), iMac (models from late 2009)
If you have a developer account and want to download tvOS 11, watchOS 4 or macOS 10.13 High Sierra beta 1, go to the Apple Dev Center. These three OSes will normally be available in final versions in the fall.